Typicaly, I buy just about any brand name oil in a 5W30. I have lots of 5W20 for my daughters mazda3 and some 10W30 and 10W40 straggler qts purchaced from a discount shelf(dino/synthetic).
And I have to tell ya, any engine that I have ever owned ran(seat of the pants) smoother/quieter on heavier oils such as anything 40 wgt. MPG may have suffered a bit on the heavier oil but, the engines seemed really creamy smooth.
And in my engines, there are more viberations, harmonics, just audiable sounds when using the required oils! They're not noisy per/say, the sounds are just there.